i386.c (ix86_expand_vector_init_one_nonzero): Renamed from ix86_expand_vector_init_low_nonzero.

	* config/i386/i386.c (ix86_expand_vector_init_one_nonzero): Renamed
	from ix86_expand_vector_init_low_nonzero.  Take an additional
	one_var argument indicating which element is non-zero.  Support
	one_var != 0 for V4SFmode and V4SImode by permuting the result.
	(ix86_expand_vector_init): Call ix86_expand_vector_init_one_nonzero
	with one_var instead of ix86_expand_vector_init_low_nonzero.

	* gcc.target/i386/vecinit-1.c: New test case.
	* gcc.target/i386/vecinit-2.c: Likewise.

From-SVN: r112832